BirdAnalyst
Species · BCR 21 · BBS 2025 Release · 1966–2024

Chimney Swift In Oaks and Prairies

All regionsOaks and PrairiesAerial insectivores

Chimney Swift in Oaks and Prairies has collapsed: down 87% on the route-weighted index since 1969.

-87%Since 1969
74Routes In Region
57Years

Notable Signals

long arc declinecomputed index

Chimney Swift has collapsed in Oaks and Prairies: down 87% on the route-weighted index since 1969.

Forecast

If the recent trend holds, Chimney Swift in Oaks and Prairies is projected to fall about 100% by 2029 — from 1.8 in 2024 to a central estimate of 0.00 (95% range 0.00–1.9). A 5-year backtest shows a typical error of ±78%, with 80% of held-out values landing inside the 95% band.

-100%Change by 2029
0.00Projected 2029 index
0.00–1.995% range
±78%Backtest error
19672029
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected index95% low95% high
20250.040.002.0
20260.000.001.9
20270.000.001.9
20280.000.001.9
20290.000.001.9

Routes In Oaks and Prairies

Routes recording Chimney Swift in Oaks and Prairies.
DallasTEXAS202024
ThorntonTEXAS151984
WeatherfordTEXAS132024
BarnsdallOKLAHOMA111977
GauseTEXAS111997
RhomeTEXAS102024
E GeorgetownTEXAS91979
KosseTEXAS92023
WalburgTEXAS92024
Wills PointTEXAS92016
SchroederTEXAS81995
Glen RoseTEXAS72015
Peach CreekTEXAS61992
OlaTEXAS62022
Thornton 3TEXAS52024
DuncanOKLAHOMA42021
Lone OakTEXAS42021
CayugaTEXAS42024
CarlosTEXAS42024
Whit Mtn.TEXAS42016
Gambill Ref.TEXAS42017
Mill CreekOKLAHOMA32018
LocoOKLAHOMA31984
Massey LakeTEXAS32024
OsageTEXAS32009

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.